Figure 3

The calculated band structures of O-CH3NH3PbI3 (a), O -CH3NH3BiI3 (b), T-CH3NH3PbI3 (c), and T-CH3NH3BiI3 (d). The red dashed lines represent the Fermi level.

The calculated band structures of O-CH3NH3PbI3 (a), O -CH3NH3BiI3 (b), T-CH3NH3PbI3 (c), and T-CH3NH3BiI3 (d). The red dashed lines represent the Fermi level.